Most of the time I don't stat out equipment- if you say you have Sword and Shield I assume you have the equipment.- if you want to have "OrcSlaying Dagger" then we stat it out.

Sometimes I want a signature piece of equipment. As pure metagame I permit only one character to have that special piece of equipment.

Imagine that this specialized equipment is an Affinity.- Within that Affinity are several Feats which may be used.(Most of the time, I treat abilities as Abilities or sometimes as Spells from a Grimoire -- Abilities are broad, Spells are powerful but specific)

A mini-Nuke is a small thermonuclear device. So it blows stuff up. But in terms of resistance its not that hard to overcome. So my villains get a roll to escape the blast, and other PCs can find ways to survive it. I wanted the colour of characters being able to say "that building goes up in a vapour" or "the enemy ship ruptures inside of its force field, then the forcefield goes," but to not have ultimate power over all of the actants in the game.

It's just like a character having "Follower: Red Dragon (13)": sounds cool but it is not a game-breaker.